Improvement in filters



I. G. FU LG H U M.

Filters.

Pat ntedSept. I, 1874.

INVENTOR .dltvrneys WITNESSES I V attached by suitable coverticaldongitudinal UNITED STATES PATENT OFFICE.

JOHN FULGHUM. or ZNASHVILLE, TENNESSEE. I

giygPudVsm-rdf INFILTEIRS.

. r e qr z'nm fln t itl t H 1M,6$0 ,;dl.ted September-1, 1874spplicaitiori sea a i May 26,1874.

1'0 alliohom it m cancern." w Be it known that I, JOHN ,G. FULGHUM, f

of'Nashville-fln the countyfof-Devidson and State of Tennessee, haveinvented an Improvedy Filteqfiofwhich the following is a. specification:

iuvention relates to a filter having meansfor putifyinigthesame, whichcan be hnections to an'ordiy pply-Dir My inventiowc' v t for containingausuam per mg ofi'grevel,

' ,sand, and "cherco having enair-chainlierfor steudying the fl wflofwater as it;entersi1 ito Titty, invention consists, secondly,insupplementahcylinders, having chambers for containing" sp'ougerMyfinvention consists, thirdly, in screws having followers operatingwithin l thesupplementsl cylinders for alternatelysqueezii|g*and;"relessing the sponge within th-enn-to cleemse the same.

My invention consists, fOurthly, in attachin g a flexible tube tothesupply-pipe 0t: the-filter,

by suitable coupliugsyto act to eausea re? diumswhendesired. e

verse current tomsshrough the littering i-ue- The accompanying drawingrepresents a," section of-myimproVcd I illter,w ith the purifierztttached the sup} Arepresents' the main cylinder;' B, the airehamber,liavingpe il'orationsb b, for the escupejof the water. .A'ronnd thissir-chamber B [plecegravel' or sand, and above it chareo'aL. C 0"eresilphlementalg cylinders, atteched,-respectivel ,at' the loij verfandupper endsot; the main cylinder, byhoupliugs 1 2. These cylinders G 0have ehembers c 0, into whichl place sponge, and at theirrear ends to34, Through these caps 1 insert screws D ,lhevingi followers d d;whieh-cau'be perforated for alternately Bqueezih'g and relegts in thesponge by simplyturning the same. Be ow the ca s 311 insert .cocks 'z'z, for

drawing" oil! the :water alter pressing the sponge. 1 S isig pipe,communicating with the wmr-supply,-hnving ihucetz 31 y, and attsched "tothe lower side of the suppleiiieutal cylinder 13 ibyQ-fnlcoupling; 5:*Between the ,toueetsg y in the supply-pipe S Iinserte m as it passesthrough it. I" The apparatus, taken cockflv, to the end 6 of which isattached a tube, P, of rubber or analogous. material; 1:. is thedischarge-pipe ofthe. filter, having a. .fmieee'ti w, and coupling 6,with which it is a-t- -v tach to the upper side of the supplementalfront end of this c linder,-througl1 which the watercan be drawn, andisguarded at its inner end by a'straiuer, d. The tube P is i used forconducting the water; directly from thesupply-pipe S to the upper end ofthe filter, forthe purpose of cleansing the filtering mediums byvreversing the flow of thecurrent Lot water.

To receive the. tube I, thew 6.' is removed, and thecoupling 7 of thetube P is inserted into the'cylinder C, the cock 3 and vfaucet a, beingclosed. The cocks 3 av z; arertheniopeued, suitable vessels having beenprovided for the reception of the im pure purifier is being, used thescrews D D are operated, so as to squeeze thesponge'again-and,again;

t he purifier the main cylinder A by detaching the upper cylinder 0''. 1

ltwill beseen that thethorough muiuerin which I cleanse the filter willdispense with the necessity of taking the filter apart except when newfiltering material is required, though v 1 construct the whole apparatusso that it can be easily taken apart and put together again whennecessary,

The airrchmnbe'r B'i's formed by a-vertical tubeclos'ed at the upperend, and suitably at tached'at the lower end to. the coupling .1 of

'tliefcylinderfl: This ztir-clm-mber receives the i'naiu pressure of thewater as it enters the cylinder A, and regulates the flow of the weasuwholc, will be found to successfully filter the most impure water, andis also simple, n-n'd cheaply minim factured.

I do not limit myself to the precise form.

shown, as modificationsdu form and design will suggest themselves to themechanic.

Clhetbllowing is claimed as new: 7

1. The-main cylinder A, having the airchamber B, substantially asdescribed, for the purpose set forth; 7 i

2, 'J.-he;su1 iplcmentul cylinders (3 C, having w is acock, inserted inthe' pipe E can be attached directly (mmd vl nlnbei's (i c, inemnbinntiun \\'l(ll the main coupling 7', for application to the socketoi the cylinder A, Substantially as and for the pin: .nliscllm ge pipe,for' purifying the apparatus pose set forth. in the manner set forth.

3. The combination of the external supple- In testimony of whichinventinnIhereunto mental cylinders O'(.J,-the supplemental disset myhand this'l-ltli day uf May, 1874. charge-cocks 22, and thesqueezing;screws

